Hitachi H8/500 Series - Pin Wait Mode

Figure 7-3 shows the timing of the operation in this mode when the wait count is 1 (WC1 = “0,”
WC0 = “1”) and the WAIT pin is held Low to insert one additional wait state.
RD, AS,
DS (Read)
D –D70
ø
D –D
70
WR, DS
(Write)
A –A
19 0
WAIT pin
Off-chip address
Write data
Read data
T2T1 TW
Wait
count
T
W T3
WAIT
pin
**
* The arrowheads indicate the times at which the WAIT pin is sampled.
Figure 7-3 Pin Wait Mode
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